ARTICLE
Characteristics of pure Love mode SAW sensor with graphene interdigital transducer for biosensing applications
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1
Yunnan Key Laboratory of Optoelectronic Information Technology, Yunnan Normal University, Kunming, China
 
2
Changchun University of Science and Technology, Changchun, Jilin, China
 
 
Submission date: 2022-03-29
 
 
Final revision date: 2022-05-28
 
 
Acceptance date: 2022-06-30
 
 
Online publication date: 2022-08-24
 
 
Publication date: 2022-11-25
 
 
Corresponding author
Chen Chen   

School of Physics and Electronic Information, Yunnan Normal University, 650500, Kunming, China
 
 
Journal of Theoretical and Applied Mechanics 2022;60(4):551-559
 
KEYWORDS
TOPICS
ABSTRACT
The characteristics of Love wave biosensors are systematically investigated. The results show that sensors with combination of a ZnO guiding layer and 90ST or 90AT Quartz substrates exhibit purer Love modes than those with the SiO2 guiding layer. The corresponding maxi- mum sensitivities are −10.9069 and −11.641m2/kg, respectively, which are nearly two times higher than those of SiO2 layer. The ZnO/90ST Quartz Love wave sensor exhibits the largest K2 of 0.3022 and achieves 0 ppm/oC of TCF at hZnO/λ = 0.0216. The sensor employing the Graphene IDT further improves the sensitivity by nearly one order of magnitude.
 
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